Greendale Historic District is national landmark

There about 2,500 designated national historic landmarks across U.S.

The U.S. Interior Department has designated a new national historic landmark in Wisconsin.

The Greendale Historic District in the Village of Greendale was one of three government-sponsored “greenbelt” communities built during the Great Depression of the 1930s.

The Interior Department said Greendale represents the federal response to the high unemployment of the era and the need for housing reform for the urban working class.

Interior Secretary Ken Salazar on Wednesday announced 26 new national historic landmarks and one national natural landmark.

Currently there are just more than 2,500 designated national historic landmarks and nearly 600 national natural landmark sites across the United States.